Issue #2872162 by chr.fritsch, adityasingh, jian he, p4trizio, amateescu, alexpott: No hook alter to override Field Widget wrappers created by WidgetBase::form

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2279105 by mgifford, nidaismailshah, thedavidmeister, amitgoyal, rpayanm, ameenkhan07, rakhimandhania, jhodgdon: Remove as many "..." and ellipsis characters from the codebase as possible without altering the meaning of text

Issue #2312093 by alexpott, yched, andypost, swentel | xjm: Rename FieldInstanceConfig to FieldConfig.

Issue #2204325 by Arla, cbr, Berdir, benjy: Fixed The "rendered entity" formatter breaks for entity types with out a ViewBuilder.

Issue #2050835 by Berdir | yched: Move Widget, Formatter, and FieldType plugin types to the Core\Field system.

Issue #2029857 by swentel, andrewmacpherson: Fixed Field plugin settings edit button doesn't show unless there is a settings summary.

Issue #2051923 by Berdir, dixon_, plach: Rename \Drupal\Core\Entity\Field\Field, related subclasses and interfaces to *FieldItemList.

Issue #1758622 by klausi, fago, das-peter, Pancho, Berdir, yched: Provide the options list of an entity field.

Issue #1847002 by tim.plunkett, effulgentsia, msonnabaum: Move entity type classes from Drupal$provider\Plugin\Core\Entity to Drupal$provider\Entity.

Issue #2021817 by effulgentsia, yched: Make widgets / formatters work on EntityNG Field value objects.

Issue #1969728 by yched, effulgentsia, swentel, fago, plach: Implement Field API 'field types' as TypedData Plugins.

Issue #1950632 by effulgentsia, Wim Leers, amateescu, yched: Create a FieldDefinitionInterface, decoupled from  and  config entities, and use it for formatters and widgets.

Issue #1981198 by yched: Change notice: More accurate names and form_ids() for Field UI form classes.

Issue #1785256 by yched, Stalski, zuuperman, sun, tstoeckler, aspilicious, EclipseGc, larowlan: Widgets as Plugins.